SARUNN ER Smart Ring
Model overview
3
Price range
$22.80
—
$49.99
Variant spread:
Medium
Available variants
Key differences
Battery Life
5 days, 30 days with charging case • 5–7 d
Size
7 • 8
Color
Silver • Rose Gold
How to choose
- Start with your budget: the visible price spread across variants is about 119%.
- Pick color and finish only after deciding on hardware requirements.
Trade-offs
Budget vs feature set
Higher-priced variants are more likely to include meaningful hardware upgrades.
Battery Life
Different values may change day-to-day usage profile depending on your priorities.
Size
Different values may change day-to-day usage profile depending on your priorities.
Starting from $22.80
Last price update: 11/9/25
Smart Ring is a discreet health and fitness tracker designed for all-day wear. It monitors sleep patterns, heart rate, and blood oxygen levels while counting steps and tracking various activities. With IP68 waterproofing, it withstands water exposure up to 90 meters. The device features a long battery life, magnetic charging, and compatibility with both Android and iOS devices, offering lifetime app access without subscription fees.